Shore



F. J. STREIT June 9, 1925.

SHORE File d May 5, 19.25

Patented June 9, 1925.

FRANK J. STREIT, OF

CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO DAVID B. KAUFMANN, OFCINCINNATI, OHIO.

SHORE.

Application filed Kay 5, 1928. Serial No. 686,989.

To all whom it may concern:

Be it known that I, FRANK J. STRnrr, a citizen of the United States.residing at the city of Cincinnati, in the county of Hamilton and Stateof Ohio, have invented certain new and useful Improvements in Shores, ofwhich the following is a specification.

In the construction of buildings, especially those structures andbuildings which are made of concrete or a plastic material or of asimilar character, the skeleton work which reaches from one pillar tothe other, or from one part of the building to another and formsconnecting links in the construction, must be supported until theconcrete or the like is dry and has set to the form desired. otherwise,the parts would sag, crack, and become misformed, making the structureimproper in shape and a false and undesirable construction would result.

In order to properly support such 'concrete construction, props or whatare known as shores are used in large numbers, these shores reach from abase supporting point up to and under the part to besupported and holdsaid part intact and in proper alignment until the same has set; atwhich time said shores may be removed. The

whole interior of the building construction 39 must be shored in somemanner.

It is the object of my invention to produce a shore of this character.which shall be adjustable to difierent heights, is simple ofconstruction, cheap of manufacture, and 85 highly efiicient in use,making it an article of great utility in the line in which it isintended to be used.

It consists essentially of a frame-work or supporting means supported atthe bottom by a base, and near the top of said framework is placed asupporting plate, which carries a hollow housing, case, or saddle inwhich are placed two concaved jaws, one permanently held and the othermoveable toward and away therefrom, a tilting ring or washer restingupon an upwardly extending wing on said saddle or housing, and a pipeextending upwardly through said housing between the jaws therein andthrough said ring or washer, carrying at the top a head piece, said pipecapable of upward and downward movement which is fully pointed out inthe specification. I also. provide manually operated means for raisingsaid pipe upwardly for adjusting purposes. I

The pipe may be freely moved upwardly, but any attempt to move itdownwardly or stop the upward movement, the tilting ring or washer and-'automatically becoming cocked on the pipe, thus preventing retrogradeaction. The jaws may then be tightened to lock the pipe in a fixedlocked position.

One of the salient features of this invention consists in providing aring and connections which allow the free upward movement of the pipe,the ring, however, cooking on the pipe immediately upon an attempt atretrograde movement of said pipe, or in using the pipe in any givenposition, at which said ring has been cooked, to hold the pipe, and thisis the position in which it is desired to hold the pipe and the head. atits end against the work, the jaws are forced to grip the pipe so as tohold it in a locked position against any movement.

The various features and advantages of my invention will readily becomeapparent upon reading the following description thereof:

Fig. 1, is a perspective view of the shore, completely assembled, brokenaway partly at the middle,

Fig. 2, is a vertical section on line 2--2 of Fig. 4,

Fig. 3, is an enlarged view in section, on line 3-3 of Fig. 4, and

Fig. 4. is an upper cross section on line 4-4 of Fig. 2.

In carrying out my invention, I provide standards or shores as 1,resting on a base part 2, and at the top of this frame-work I provide ahood or housing 3.

Near the top of the frame-work I place a plate 4, having a hole thereinthrough which the pipe 5 passes and extends and through which said pipecan be moved upwardly and downwardly; the pipe also passing through thetop 6 of the hood 3. At its upper extremity the pipe carries asupporting head 7 which presses or impinges against the work to besupported.

On the plate 4 I place a hollow case saddle or housing 8 held inposition through the medium of HIS 9 which extend up from the plate 4and pass through the holes 10 in said saddle or housing; the pins beingsomewhat less in diameter than the size of the holes, to allow for playor adjustment.

This saddle, case, or housing 8 is open at the bottom as shown at 12,see Fig. 3, and is partially closed at 13 at the top, and at its otheror opposite end is provided with an upwardly extendin rib or wing 14,which extends upwardly rom the top part 15 of said saddle or housing andpartially inwardly therefrom. In this housing I provide and place twosemi-circular or concave jaws 16 and 16', provided with ribbed orcorrugated inner faces 17; these jaws rest at the bottom on the plate 4and are held against upward movement by the parts 13 and 14; againstdownward movement by the ribs 35 on the'inside of the case or housingwall. At one end of this housing or case I provide a locking set screw18 which can be screwed inwardly or outwardly, forcing the jaw section16 toward or away from the jaw section 16', to hold the pipe in a lockedposition against displacement and if'moved away from the jaw section 16the hold on the pipe will be loosened; the jaw 16 being movable and thejaw section 16 being stationary.

On the top of the saddle, case, or housing 8, I loosely place the ringor washer 19, the pipe 5 extending through a hole 20 in said washer orring. This washer is used for automatically holding the pipe 5 in anygiven position and the hole 21 in the housing 3 is for the purpose ofadmitting a bar to raise the washer 19 in order to release its hold onthe pipe 5 after the jaws 16 and 16 have loosened their locking hold onsaid pipe. In order to quickly and readily move and adjust the pipe 5,and its supporting head 7 at its top, against the work to be supportedin order that the head 7 may press or impinge against said work, or, toreadjust said pipe and head when a further upward movement is desired tomove satisfactorily support said work, I provide a lifting or adjustingmeans which I will now describe.

A frame as 22 is provided which is connected to the housing 3 by ears 23passin into and through the opening 40 in said housing 3 and hookingtherein, at the top, and at the bottom by ears 24 resting against thehousin 3 on the outside. This framework 22 is old together by the barsand lock nuts 25. In the middle of the frame 22 I place a lever 26fulcrumed at the point 27, having a forwardly extending arm 28 with aforked end 29 which engages over a link of the chain 30. This chain isfastened at one end to the arm 28 and passes over the upper tie-bar 25,then downwardly to the bottom of pipe 5, where it is provided with ahook 31 which can be engaged at the lower mouth of the pipe; then byoperating the lever 26 downwardly the chain 30 is drawn upwardly,forcing the pipe 5 and conse quently the head 7, upwardly in contactwith the work which is being supported.

The lever 26 can be operated downwardly as many times as desired inorder to bring the pipe and its head up to the required 0- sitionneeded. Any other form of liftlng device may be employed than the oneherein described and set forth.

The device operates as follows: The shore is set under the work which itis intended to support. The lifting apparatus which carries the chain isthen set in position and the lever 26 moved downwardly, after the hook31 has been engaged with the lower mouth of the pipe as shown in Fig.2.; the downward movement of the lever 26 raises the pipe one step at atime as each successive link 30 is engaged until the head 7 restsagainst the structure to be supported. This upward movement of the pipedoes not affect the ring or washer 19, and the pipe can freelylbe movedupward, when the head 7 is properly supportlng the work the frame-work22 and the chain are removed and there being an immediate tendency forthe pipe to move downward, this will immediately cause the washer orring 19 to become cocked on the pipe 5 and hold it in the properposition. In order to maintain this position against displacement of anykind the lock screw 18 is turned in a proper direction, forcing the jaw16 over toward the stationary jaw 16' and under this operation the pipe5 is gripped by the corrugated faces of said jaws and held in a positionagainst displacement. If it is desired to lower the pipe 5 the lockscrew 18 is turned in an opposite direct-ion bringing the jaws 16 awayfrom the pipe 5 and thus the pipe is only held by the cocked washer 19.It is now necessary to disengage this cocked washer 19 and this is doneby placing a bar through the hole 21in the housing 3 and dislodging thesame, then the pipe can be lowered.

It will, of course, be understood that when, in the first instance, thepipe and its head 7 has been raised against the work to be supported andthe proper pressure against the structure to be supported has beenreached, and the pa ts locked, the frame 22 and connections are removed,but when it is desired to have the head 7 iminge more tightly againstthe structure to e supported, for any reason, the said lifting means isagain put in position and the same operation repeated as before stated.

The frame which supports the shoring element and which operates upwardlyand downwardly inconnection therewith, may be made of any desired formand need not be a frame-work as shown, but may be changed and altered inany manner to support the shoring element.

The construction herein shown is a preferred form, but I may alter andchange the same to some extent and make same in a modified form. a

What I claim as new and my invention and desire to secureby LettersPatent is:

1. A shore including a supporting frame having a head, a pipe slidablymounted in the central portion of said head and having a supportingblock at its upper end, a shelf plate arranged in the frame andsurrounding the pipe, a stationary jaw arran ed on the shelf plate andhaving a num r of corrugations to grip the pipe, a movable corrugatedjaw supported by the shelf plate and arranged opposite the stationaryjaw, means extending to the exterior. of the frame and engageable withthe movable jaw to permit the operator to adjust the latter, a ringsurrounding said pipe, means for normally holding the ring in cantedposition, whereby the ring automatically grips the pipe and prevents thelatter from moving downwardly, and means detachably connected to theframe and engageable with the pipe for raising the latter.

2. A shore including a frame provided with an apertured head, a latearranged in the frame and provided w1th an aperture, a pipe slidablyarranged in said apertures and provided at one end with a supportingblock, a casing arranged in the frame at one side of said plate andsurrounding the pipe, a stationary corrugated jaw arranged in the casingand adapted to grip one side of the pipe, a movable corrugated jawarranged in the casing and gripping the o posite side of the pipe, meansextending t rough the frame and casing and engaging the movable jaw topermit the operator to actuate the latter from the exterior of theframe, a ring loosely mounted on the pipe, means for canting the ring tocause the latter to automatically grip the pipe and prevent the latterfrom moving downwardly, said ring being accessible from the exterior ofthe frame to permit the operator to move the ring into a position atright angles to the axis of the pipe, a bracket detachably connected tothe frame, a lever ivotally mounted in the bracket, and a chaindetachably connected with the lower end of the pipe and engageable withthe lever to permit the latter to raise the pipe when force is exertedon the lever.

In testimony whereof, I afiix my signature at Cincinnati, Ohio, this24th day of April, 1923,-

FRANK J. s'rnnrr.

